|Title||Adsorption Characteristics of Pb2+ onto Wine Lees-Derived Biochar|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Zhu, Qihong, Wu Jun, Wang Lilin, Yang Gang, and Zhang Xiaohong|
|Journal||Bulletin of Environmental Contamination and Toxicology|
Biochar has great advantages in soil amendment and polluted soil remediation. Herein, the pore and adsorption properties of wine lees-derived biochar were explored. Specifically, the adsorption isotherm and kinetics of Pb2+ onto wine lees-derived biochar were examined. Experimental results revealed that wine lees-derived biochar featured large specific surface area and total pore volume, and high contents of –COOH and –OH on its surface. Adsorption of Pb2+ onto wine lees-derived biochar proceeded via a multilayer adsorption mechanism, as described by the Freundlich adsorption model. Adsorption kinetics followed the Lagergren pseudo-second-order kinetics model; adsorption equilibrium was achieved within 30–60 min. Furthermore, the effect of solution pH on the adsorption of Pb2+ was investigated. Within the studied pH range of 3–6, the adsorption capacity increased with increasing pH. Under established optimized conditions, wine lees-derived biochar achieved a Pb2+ adsorption capacity of 79.12 mg/g.
|Short Title||Bull Environ Contam Toxicol|